The entire traffic movement in the city went haywire with hundreds of vehicles being stranded on the road.
Tej Pratap Yadav addicted to marijuana, dressed like Radha, Krishna: Wife Aishwarya during divorce plea
Tej Pratap Yadav is the elder son of Lalu Prasad Yadav and Rabri Devi and he got married to Aishwarya Rai in May 2018.
Tej Pratap is reportedly injured in his knee and his SUV was partially damaged.
"Tejashwi Yadav, you continue your struggle to take the party to the top level of performance," Tej Pratap told his brother in a letter.
The camera person who was beaten by Yadav's security guards allegedly broke the windscreen of Yadav's car.
The incident took place when Yadav was returning after casting his vote along with his private security guards.
'Miss you Papa': Tej Pratap Yadav after being denied permission to speak at Rahul Gandhi's poll rally
The rally was organized on Thursday at Vikram in Patliputra LS constituency where Tej Pratap's elder sister Misa Bharti is locked in a fierce fight with BJP candidate and sitting MP Ram Kripal Yadav.
Tej Pratap, the mercurial elder son of Prasad, had recently quit as the patron of the party's students' wing and even campaigned against RJD nominees in a couple of seats.
Tej Pratap Yadav said his younger brother is not listening to him, rejecting his advices and neglecting him.
Last month Tej Pratap took a U-turn on his earlier announcement to contest the election against Rai, the father of his estranged wife.
Tej Pratap was referring to reports claiming that brother Tejashwi Yadav cancelled his election meetings twice of late.
Earlier, the former Bihar Health Minister launched the Lalu-Rabri Morch alleging that he was being sidelined in the party.
There have been reports that Tej Pratap Yadav, the mercurial elder son of Lalu-Rabri, had been resentful of Tejashwi Yadav being declared as the political heir apparent of the RJD supremo.
Rabri Devi told media here that there is no truth in the reports of differences between her two sons Tej Pratap Yadav and Tejashwi Yadav.
Tej Pratap will begin campaigning for the party from Bihar's Maner in Pataliputra constituency from April 8.